I know what you mean. I had this problem when I first got my ZT 0550, now it opens buttery smooth with no problems. All I did was move the pocket clip from tip up to tip down. On the 0550 specifically, you'll notice that in tip down configuration does two things.
1. You are able to rest your fingers on the clip while opening, and not on the frame lock.
2. The clip rests on the lock bar stabilizer. So any pressure applied to the lock bar by the clip itself and applied by your fingers onto the clip does not get transferred to the lock bar.
I have no idea how many other frame lock knives this will apply to, so your mileage may vary.
Chris
1. You are able to rest your fingers on the clip while opening, and not on the frame lock.
2. The clip rests on the lock bar stabilizer. So any pressure applied to the lock bar by the clip itself and applied by your fingers onto the clip does not get transferred to the lock bar.
I have no idea how many other frame lock knives this will apply to, so your mileage may vary.
Chris
